package com.baselibrary.libs.Utils.FileSize;

import java.io.File;
import java.io.FileInputStream;
import java.text.DecimalFormat;

/**
 * Created by Administrator 于萌萌
 * 创建日期: 11:22 . 2017年02月07日
 * 描述:
 * <p>
 * <p>
 * 备注:
 */

public class GetFileSize {
    public GetFileSize() {

    }

    public long getFileSizes(File f) throws Exception {

        long s = 0;
        if (f.exists()) {
            FileInputStream fis = null;
            fis = new FileInputStream(f);
            s = fis.available();
            fis.close();
        } else {
            f.createNewFile();
            System.out.println("文件夹不存在");
        }

        return s;
    }

    /**
     * 递归
     * */
    public long getFileSize(File f) {
        long size = 0;
        File flist[] = f.listFiles();
        for (int i = 0; i < flist.length; i++) {
            if (flist[i].isDirectory()) {
                size = size + getFileSize(flist[i]);
            } else {
                size = size + flist[i].length();
            }
        }
        return size;
    }

    /**
     * 转换文件大小
     * */
    public String FormentFileSize(long fileS) {
        DecimalFormat df = new DecimalFormat("#.00");
        String fileSizeString = "";
        if (fileS < 1024) {
            fileSizeString = df.format((double) fileS) + "B";
        } else if (fileS < 1048576) {
            fileSizeString = df.format((double) fileS / 1024) + "K";
        } else if (fileS < 1073741824) {
            fileSizeString = df.format((double) fileS / 1048576) + "M";
        } else {
            fileSizeString = df.format((double) fileS / 1073741824) + "G";
        }
        return fileSizeString;
    }

//  /**
//   * 递归求取目录文件个数
//   * */
//  public long getlist(File f) {
//      long size = 0;
//      File flist[] = f.listFiles();
//      System.out.println("-------------" + flist.length);
//      size = flist.length;
//      for (int i = 0; i < flist.length; i++) {
//          if (flist[i].isDirectory()) {
//              size = size + getlist(flist[i]);
//              size--;
//          }
//      }
//      return size;
}
